APA (7th ed.) Citation

Kayser, H. E. 24=Twenty four studies opus 55 for viola. International Music.

Chicago Style (17th ed.) Citation

Kayser, Heinrich Ernst. 24=Twenty Four Studies Opus 55 for Viola. New York: International Music.

MLA (9th ed.) Citation

Kayser, Heinrich Ernst. 24=Twenty Four Studies Opus 55 for Viola. International Music.